Air self-coupling.



B. P. SWB-ENEY l AIR SELF GoUPLINo APPLICATION FILED 00T. 10, 1907.

Patented oct.`2o,1908.'

A for.

' .VALABLE rUIIED l'SEATES,

"PATEN T BENJAMIN FRANKLN SWEENEY, or NEosHo, MISSOURI.

Ain -snLFfCoUrLrNG- Speeicatipn of Letters Patent.

Patented Oct. 2 0,- 1908.'.

y '.appiicatiqn mea october 10,1961 seal No. 396,844.

Torifll whom it mwyeoncemf ,I

VBe itknown v,that I, BinvJAiinN E.. .SWEE- NE'Y, a citizen of theUnited States, ,residing at Neosho,.in the county of Newton and State ofMissouri, have inventeda new and useful Air Self-Coupling, of which thefollow-V -iilg is. a specification..

" l This 'nvention-relates to new and :useful improvements in lautomaticcouplings .for

pneumatic pipes for train service-: and comprises various details ofconstruction, c'ornbinations and arrangements of parts which' will behereinafter fully described and then specifically definedin'theap'pended claims. l

Myfinvention is`illustrated in the accompanying-drawings,inwhich:-'

vFigure 1 is ai longitudinal .sectional-view a centrally--through the.pipes to be connected.

Fig. 2 is a similar view showing the pipes connected together. lFig, 3.is; a bottom planl view-fof thevpipes disconnected, and Fig. 4 is asi'de elevation of portions'of two cars show-- ing the pipes connectedtogether.

' Reference ynowl being had to. thedetails of .the .drawings by. letter,A and B designate twopipe sections, the former of-which is pro- '.Videdwith apertured partitions-F, the wall ofjeach partition beingmclined, assho-Wn vclearlyin thedrawings, and C is astem having mounted thereonflexible valves E which 'are apertured and'adapted to conform to theinclined walls of the apertures in said partitions t'o cause anair-tight joint. vA 4coiled springfG is interposed between eachvalve Eand one of said partitions and serves to normally hold the two valvesseated.

' *The pipeB, .which is of larger diameter `than the 'ipe`A, has aflaring-end adapted to receive tie end of the pi e A, and R desigvAspring1 nates a flexible packing a out the circumference of thetelescoping end of the pipe A, said -packing R being adaptedfto snuglycontact with-.the inner surface of the tube B in order Ato cau'seanair-tight joint when'the valves are unseated in the manner .shown 1nFig. 2. Said pipe B haszastemj() similar to the stein mounteduponthe'pipefAand is also pro-- vided with the tapering valves E whichare ada ted to seat against the tapering margin of t ewalls of aperturesin the artitions T. G bears'between one o saidvalvesy e tube B .and apartition T serves to' Eandt 4'other'. and 4said valves 'are seat, asset forth. 2. A coupling for pneur normally hold the valve seated..- Theouter ends of each stem 'is rovided with a head D which, asone pipelteescopes within another,

are adaptedto contact withv eachother and cause the valves in both'pipes touns'eat, thus 'opening a through connection between the pipes.

It willbe noted y' that, by ltheparticularV as .shown the valves areautomatically unseated as the pipestelesco e within the while thepipesare connected together. and, when the pipes withdraw one from theother, the s rings will normally 'seat 4the valves. It .wf l, 'be notedthat vthe two4 pipeshave slight movements one 'independent of the otherby the packed end lof the ipe A -movf ing as a piston-within -the'pipe1g, if desired, andstill hold thev valves unseated.

What I claim to be new is l. An automatic lcoupling for neumatic train'pipes com rising pipes o vdifferent "diameters, one a apted to telescopeWithinA the other, a lpacking about the end pipe adapted to form amovable airtight con-' nection as it telescopes Within the other pipe,apertured valve seats within the pipe, valve stems, one within each ipe,valves fixed to said stems, and springs or normally holding .the valvesseated, the outer ends of the valve stems beingadapted to contact witheach other'as one i e'telesco eswithin P P P construction of couplingfor pneumatic. pipeseld, unseated.

saA

the other, thereby causing the' valves to unq train pipes d te telescopeeut ene pipe the' other,

